A couple of things, from what I understand from the feedback, plan to get there at least around 9 AM in order to park, walk/find the building, and then trek to find your interviewer in a separate building. I will be driving down from DC tonight for my interview tomorrow just because I have a friend there who lives close to campus that I can stay with. If I had to drive in the morning I would consider the fact that I would be heading against traffic for a while going down 95 away from DC, but the closer you get to Richmond, the heavier traffic will be. Are there HOV restrictions on 95 inside the Richmond beltway? One good thing is that it is interstate most of the way. Bottomline, I think it is do-able in 3 hours, in NORMAL rush hour traffic (you are taking a risk though because there may be an accident or overturned truck etc). I would not leave any later than 6:00 on the dot.